Revert "GCP Observability: Add plugin registry API (#30571)" (#30765)

This reverts commit 486710317f.

BUILD

@@ -7262,29 +7262,6 @@ grpc_cc_library(
     ],
 )
 
-# This is an EXPERIMENTAL target subject to change.
-grpc_cc_library(
-    name = "grpcpp_gcp_observability",
-    srcs = [
-        "src/cpp/ext/gcp_observability/gcp_observability.cc",
-    ],
-    hdrs = [
-        "src/cpp/ext/gcp_observability/gcp_observability.h",
-    ],
-    external_deps = [
-        "opencensus-trace",
-        "opencensus-trace-stackdriver_exporter",
-        "opencensus-stats-stackdriver_exporter",
-    ],
-    language = "c++",
-    tags = ["nofixdeps"],
-    visibility = ["//test:__subpackages__"],
-    deps = [
-        "gpr",
-        "grpc_opencensus_plugin",
-    ],
-)
-
 grpc_cc_library(
     name = "json",
     srcs = [

bazel/grpc_deps.bzl

@@ -170,16 +170,6 @@ def grpc_deps():
         actual = "@io_opencensus_cpp//opencensus/tags:context_util",
     )
 
-    native.bind(
-        name = "opencensus-trace-stackdriver_exporter",
-        actual = "@io_opencensus_cpp//opencensus/exporters/trace/stackdriver:stackdriver_exporter",
-    )
-
-    native.bind(
-        name = "opencensus-stats-stackdriver_exporter",
-        actual = "@io_opencensus_cpp//opencensus/exporters/stats/stackdriver:stackdriver_exporter",
-    )
-
     native.bind(
         name = "libuv",
         actual = "@com_github_libuv_libuv//:libuv",

src/cpp/ext/gcp_observability/gcp_observability.cc

@@ -1,65 +0,0 @@
-//
-// Copyright 2022 gRPC authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-#include <grpc/support/port_platform.h>
-
-#include "src/cpp/ext/gcp_observability/gcp_observability.h"
-
-#include <stdint.h>
-
-#include <utility>
-
-#include "opencensus/exporters/stats/stackdriver/stackdriver_exporter.h"
-#include "opencensus/exporters/trace/stackdriver/stackdriver_exporter.h"
-#include "opencensus/trace/sampler.h"
-#include "opencensus/trace/trace_config.h"
-
-#include <grpcpp/opencensus.h>
-
-namespace grpc {
-namespace experimental {
-
-namespace {
-// TODO(yashykt): These constants are currently derived from the example at
-// https://cloud.google.com/traffic-director/docs/observability-proxyless#c++.
-// We might want these to be configurable.
-constexpr uint32_t kMaxAttributes = 128;
-constexpr uint32_t kMaxAnnotations = 128;
-constexpr uint32_t kMaxMessageEvents = 128;
-constexpr uint32_t kMaxLinks = 128;
-}  // namespace
-
-void GcpObservabilityInit() {
-  // TODO(yashykt): Add code for gRPC config parsing
-  grpc::RegisterOpenCensusPlugin();
-  grpc::RegisterOpenCensusViewsForExport();
-  // TODO(yashykt): Setup tracing and stats exporting only if enabled in config.
-  // TODO(yashykt): Get probability from config
-  opencensus::trace::TraceConfig::SetCurrentTraceParams(
-      {kMaxAttributes, kMaxAnnotations, kMaxMessageEvents, kMaxLinks,
-       opencensus::trace::ProbabilitySampler(1.0)});
-  opencensus::exporters::trace::StackdriverOptions trace_opts;
-  // TODO(yashykt): Set up project ID based on config
-  opencensus::exporters::trace::StackdriverExporter::Register(
-      std::move(trace_opts));
-  opencensus::exporters::stats::StackdriverOptions stats_opts;
-  // TODO(yashykt): Set up project ID based on config
-  opencensus::exporters::stats::StackdriverExporter::Register(
-      std::move(stats_opts));
-}
-
-}  // namespace experimental
-}  // namespace grpc

src/cpp/ext/gcp_observability/gcp_observability.h

@@ -1,33 +0,0 @@
-//
-// Copyright 2022 gRPC authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-#ifndef GRPC_INTERNAL_CPP_EXT_GCP_OBSERVABILITY_GCP_OBSERVABILITY_H
-#define GRPC_INTERNAL_CPP_EXT_GCP_OBSERVABILITY_GCP_OBSERVABILITY_H
-
-// TODO(yashykt): This file would have been in the top include/grpcpp directory
-// instead of in src/, but I'm not yet sure about the naming, so keeping it here
-// till we decide.
-
-namespace grpc {
-namespace experimental {
-
-// Initialize GCP Observability for gRPC.
-void GcpObservabilityInit();
-
-}  // namespace experimental
-}  // namespace grpc
-
-#endif  // GRPC_INTERNAL_CPP_EXT_GCP_OBSERVABILITY_GCP_OBSERVABILITY_H

test/cpp/ext/gcp_observability/BUILD

@@ -1,34 +0,0 @@
-# Copyright 2022 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-load("//bazel:grpc_build_system.bzl", "grpc_cc_test", "grpc_package")
-
-licenses(["notice"])
-
-grpc_package(name = "test/cpp/ext/gcp_observability")
-
-grpc_cc_test(
-    name = "gcp_observability_test",
-    srcs = [
-        "gcp_observability_test.cc",
-    ],
-    external_deps = [
-        "gtest",
-    ],
-    language = "C++",
-    deps = [
-        "//:grpcpp_gcp_observability",
-        "//test/cpp/util:test_util",
-    ],
-)

test/cpp/ext/gcp_observability/gcp_observability_test.cc

@@ -1,36 +0,0 @@
-//
-// Copyright 2022 gRPC authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-#include "src/cpp/ext/gcp_observability/gcp_observability.h"
-
-#include "gmock/gmock.h"
-#include "gtest/gtest.h"
-
-#include "test/core/util/test_config.h"
-
-namespace {
-
-TEST(GcpObservabilityTest, RegistrationTest) {
-  grpc::experimental::GcpObservabilityInit();
-}
-
-}  // namespace
-
-int main(int argc, char** argv) {
-  grpc::testing::TestEnvironment env(&argc, argv);
-  ::testing::InitGoogleTest(&argc, argv);
-  return RUN_ALL_TESTS();
-}

tools/buildgen/extract_metadata_from_bazel_xml.py

@@ -655,8 +655,7 @@ def _exclude_unwanted_cc_tests(tests: List[str]) -> List[str]:
     tests = [
         test for test in tests
         if not test.startswith('test/cpp/ext/filters/census:') and
-        not test.startswith('test/core/xds:xds_channel_stack_modifier_test') and
-        not test.startswith('test/cpp/ext/gcp_observability:')
+        not test.startswith('test/core/xds:xds_channel_stack_modifier_test')
     ]
 
     # missing opencensus/stats/stats.h